Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504368
W. Muhamad, A. K. Junoh
Vibration and sound in the comfort of the interior of the car are all factors which are normally considered by the customer to buy a vehicle. Basically a vehicle with a lot of vibration and noise has to be comfortable not adversely affect the comfort optimum for the vehicle acoustical comfort index (VACI) in the interior of the car. With reference to the relationship between the VACI the VDV is dependent while driving. Normally, the sound produced by the motor system can cause damage to human hearing system, stress, harassment and sometimes can reduce the concentration of driving that will result in a road accident. Since the vibration is a major contributor to noise levels, a study was conducted to obtain the vibration dose value (VDV) is on engine speed, a mathematical model was constructed to find the optimum value for the VDV to gain VACI better value by satisfying all the equations and constraints are identified based on the characteristics of the noise and vibration. By using optimization model is generated, automotive researchers will be able to make a benchmark for the vibration dose value for the index the better acoustic comfort in the interior of the vehicle.
{"title":"Optimization of noise and vibration in passenger car cabin","authors":"W. Muhamad, A. K. Junoh","doi":"10.1109/CHUSER.2012.6504368","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504368","url":null,"abstract":"Vibration and sound in the comfort of the interior of the car are all factors which are normally considered by the customer to buy a vehicle. Basically a vehicle with a lot of vibration and noise has to be comfortable not adversely affect the comfort optimum for the vehicle acoustical comfort index (VACI) in the interior of the car. With reference to the relationship between the VACI the VDV is dependent while driving. Normally, the sound produced by the motor system can cause damage to human hearing system, stress, harassment and sometimes can reduce the concentration of driving that will result in a road accident. Since the vibration is a major contributor to noise levels, a study was conducted to obtain the vibration dose value (VDV) is on engine speed, a mathematical model was constructed to find the optimum value for the VDV to gain VACI better value by satisfying all the equations and constraints are identified based on the characteristics of the noise and vibration. By using optimization model is generated, automotive researchers will be able to make a benchmark for the vibration dose value for the index the better acoustic comfort in the interior of the vehicle.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128333166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504369
S. A. Kamaruddin, N. A. M. Ghani, N. M. Ramli
Malaysia is aiming towards a developed country by the year 2020. Therefore, implementation of Private Financial Initiative (PFI) in Malaysia is needed as a procurement method to improve the delivery and quality of infrastructure facilities and public services in this country. The most essential aspect that needs to be fulfilled in this program is value for money (VFM) whereby maximum efficiency and effectiveness of every purchase is attained. Hence, at the preliminary stage of this study, estimating materials price index in Malaysia is the main objective. This particular paper aims to discover the best forecasting method to estimate cement price index by different regions in Malaysia since cement is the main material used in construction industry. Cement index data used were from year 2005 to 2011 monthly data of different regions in Peninsular Malaysia, and year 2003 to 2011 monthly data in both Sabah and Sarawak. It was found that Backpropagation Neural Network (BPNN) with linear transfer function produced the most accurate and reliable results for estimating cement price index in every region in Malaysia. The neural network models selection were based on the Root Mean Squared Errors (RMSE), where the values were approximately zero errors and highly significant at p<0.01. Therefore, artificial neural network is sufficient to forecast cement price index in Malaysia. The estimated price indexes of cement will contribute significantly to value for money in PFI and soon towards Malaysian economical growth.
{"title":"Determining the best forecasting model of cement price index in Malaysia","authors":"S. A. Kamaruddin, N. A. M. Ghani, N. M. Ramli","doi":"10.1109/CHUSER.2012.6504369","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504369","url":null,"abstract":"Malaysia is aiming towards a developed country by the year 2020. Therefore, implementation of Private Financial Initiative (PFI) in Malaysia is needed as a procurement method to improve the delivery and quality of infrastructure facilities and public services in this country. The most essential aspect that needs to be fulfilled in this program is value for money (VFM) whereby maximum efficiency and effectiveness of every purchase is attained. Hence, at the preliminary stage of this study, estimating materials price index in Malaysia is the main objective. This particular paper aims to discover the best forecasting method to estimate cement price index by different regions in Malaysia since cement is the main material used in construction industry. Cement index data used were from year 2005 to 2011 monthly data of different regions in Peninsular Malaysia, and year 2003 to 2011 monthly data in both Sabah and Sarawak. It was found that Backpropagation Neural Network (BPNN) with linear transfer function produced the most accurate and reliable results for estimating cement price index in every region in Malaysia. The neural network models selection were based on the Root Mean Squared Errors (RMSE), where the values were approximately zero errors and highly significant at p<0.01. Therefore, artificial neural network is sufficient to forecast cement price index in Malaysia. The estimated price indexes of cement will contribute significantly to value for money in PFI and soon towards Malaysian economical growth.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129049685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504300
N. A. Muhammad, E. Omar, H. Nawawi
Atherosclerosis is the underlying pathology behind cardiovascular disease, the main cause of death in worldwide. Inflammation plays a pivotal role in its pathogenesis. Tocotrienol is a palm derived vitamin E component, known have potent anti-inflammatory properties. The effect of tocotrienol on formation and progression of atherosclerosis is unknown. Aim: to determine the anti-inflammatory and anti-atherosclerotic effects of tocotrienol-enriched mixed fraction (TEMF) supplementation in hypercholesterolaemia induced rabbits. Methods: 20 New Zealand white rabbits were randomised into two groups and fed with 1% high cholesterol diet (HCD) for (i) 2 weeks in group A and (ii) 8 weeks in group B, followed by randomization into two treatment groups: (i) TEMF (15mg/kg) or (ii) placebo for 8 weeks. During the 8 week treatment duration, all the groups were given normal diet. Analyses of atherosclerotic lesions were performed while expression of inflammatory was evaluated using immunohistochemistry. Results: There were no significant reduction in atherosclerotic lesions with TEMF treatment for both groups A and B. However, there were significantly lower positive tissue expression in TEMF compared to placebo for CRP (3.01 ± 0.86 vs. 25.51 ± 10.85%; p=0.05) and SMA (3.91 ± 1.33 vs. 16.19 ± 4.08%; p=0.04) in early atherosclerosis. In addition, no significant differences were observed between TEMF and placebo in both groups A and B for NFκB, IL-6, ICAM-1, E-selectin and MMP-12. Conclusion: Eight weeks treatment with TEMF has neutral effects on atherosclerotic lesions in both early and severe atherosclerosis. However, TEMF treatment reduces aortic intimal tissue expression of CRP especially in early atherosclerosis indicating its in vivo anti-inflammatory effects.
{"title":"Reduced in-vivo C-reactive protein aortic tissue expression following tocotrienol-enriched mixed fraction supplementation in cholesterol-induced atherosclerosis","authors":"N. A. Muhammad, E. Omar, H. Nawawi","doi":"10.1109/CHUSER.2012.6504300","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504300","url":null,"abstract":"Atherosclerosis is the underlying pathology behind cardiovascular disease, the main cause of death in worldwide. Inflammation plays a pivotal role in its pathogenesis. Tocotrienol is a palm derived vitamin E component, known have potent anti-inflammatory properties. The effect of tocotrienol on formation and progression of atherosclerosis is unknown. Aim: to determine the anti-inflammatory and anti-atherosclerotic effects of tocotrienol-enriched mixed fraction (TEMF) supplementation in hypercholesterolaemia induced rabbits. Methods: 20 New Zealand white rabbits were randomised into two groups and fed with 1% high cholesterol diet (HCD) for (i) 2 weeks in group A and (ii) 8 weeks in group B, followed by randomization into two treatment groups: (i) TEMF (15mg/kg) or (ii) placebo for 8 weeks. During the 8 week treatment duration, all the groups were given normal diet. Analyses of atherosclerotic lesions were performed while expression of inflammatory was evaluated using immunohistochemistry. Results: There were no significant reduction in atherosclerotic lesions with TEMF treatment for both groups A and B. However, there were significantly lower positive tissue expression in TEMF compared to placebo for CRP (3.01 ± 0.86 vs. 25.51 ± 10.85%; p=0.05) and SMA (3.91 ± 1.33 vs. 16.19 ± 4.08%; p=0.04) in early atherosclerosis. In addition, no significant differences were observed between TEMF and placebo in both groups A and B for NFκB, IL-6, ICAM-1, E-selectin and MMP-12. Conclusion: Eight weeks treatment with TEMF has neutral effects on atherosclerotic lesions in both early and severe atherosclerosis. However, TEMF treatment reduces aortic intimal tissue expression of CRP especially in early atherosclerosis indicating its in vivo anti-inflammatory effects.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121471246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504325
R. A. Rahim, F. Malek, S. Hassan, M. Junita
This paper proposed a new circular patch antenna design with harmonics suppression capability. The purpose of harmonic suppression antenna is to eliminate the use of harmonic filter circuit in rectenna circuit. By introducing slits at the antenna patch and stub at the transmission line, unwanted harmonics frequencies are successfully suppressed. In addition, the size of proposed circular patch antenna is reduced by using partial ground and circular slot technique at the ground plane. The patch antenna is design on FR4 substrate with εr=4.7 and a thickness of 1.6 mm has −48dB return loss at 2.45GHz and suppress the second and third harmonic up to −3dB. The proposed harmonic suppression antenna can be applied in rectenna and active integrated antenna (AIA) applications, thus the circuit become compact, cheaper and more efficient.
{"title":"A 2.45 GHz circular patch antenna with harmonic suppression for wireless power transmission","authors":"R. A. Rahim, F. Malek, S. Hassan, M. Junita","doi":"10.1109/CHUSER.2012.6504325","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504325","url":null,"abstract":"This paper proposed a new circular patch antenna design with harmonics suppression capability. The purpose of harmonic suppression antenna is to eliminate the use of harmonic filter circuit in rectenna circuit. By introducing slits at the antenna patch and stub at the transmission line, unwanted harmonics frequencies are successfully suppressed. In addition, the size of proposed circular patch antenna is reduced by using partial ground and circular slot technique at the ground plane. The patch antenna is design on FR4 substrate with εr=4.7 and a thickness of 1.6 mm has −48dB return loss at 2.45GHz and suppress the second and third harmonic up to −3dB. The proposed harmonic suppression antenna can be applied in rectenna and active integrated antenna (AIA) applications, thus the circuit become compact, cheaper and more efficient.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114750697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504347
A. Asmi, J. C. P. Putra, I. Rahman
This paper presents a study of IAQ in toilets located in the Faculty of Civil and Environmental Engineering building, Universiti Tun Hussein Onn Malaysia (UTHM). This study was conducted to determine the level of gas pollutants exist in the male and female toilets. The important IAQ parameters considered in this study are SO2, NO, and CO2. The measurements were conducted during break hour and taken using air quality monitoring. The result indicated that SO2 exceeded the threshold value and this could have adverse effect on inhalation such as asthmatic. Finally, the existing SO2 was affected by mechanical ventilation mode, while the existing CO2 was more generated in female toilet.
{"title":"A study of indoor air quality of public toilet in University's building","authors":"A. Asmi, J. C. P. Putra, I. Rahman","doi":"10.1109/CHUSER.2012.6504347","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504347","url":null,"abstract":"This paper presents a study of IAQ in toilets located in the Faculty of Civil and Environmental Engineering building, Universiti Tun Hussein Onn Malaysia (UTHM). This study was conducted to determine the level of gas pollutants exist in the male and female toilets. The important IAQ parameters considered in this study are SO2, NO, and CO2. The measurements were conducted during break hour and taken using air quality monitoring. The result indicated that SO2 exceeded the threshold value and this could have adverse effect on inhalation such as asthmatic. Finally, the existing SO2 was affected by mechanical ventilation mode, while the existing CO2 was more generated in female toilet.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134516460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504356
Z. Latif, Rabiatul Adawiyah Nasir, W. Mohd
Forest plays an important role in maintaining the environmental quality and the ecological balance of their surrounding areas. Therefore, understanding the effects of tropical rainforest destruction and fragmentation on the microclimate is critically needed. National Park, Pahang is one of the oldest tropical rainforest where the surrounding areas are facing critical threats due to tourism activities and infrastructure development. Solar radiation (I), air temperature (Ta), relative humidity (h), wind speed (v) and rainfall were measured at six different locations under the forest canopy, built-up area, trail, campsite, fragmented forest and village area. All the microclimate variables show significant differences at the measured locations. These results further the understanding of the responses to forest fragmentation in the tropical forests created by human activities, and provide a useful basis for evaluating the implications of forest management practices.
{"title":"Diurnal microclimate variations in tropical rainforest: Case study of Kuala Tahan, Pahang","authors":"Z. Latif, Rabiatul Adawiyah Nasir, W. Mohd","doi":"10.1109/CHUSER.2012.6504356","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504356","url":null,"abstract":"Forest plays an important role in maintaining the environmental quality and the ecological balance of their surrounding areas. Therefore, understanding the effects of tropical rainforest destruction and fragmentation on the microclimate is critically needed. National Park, Pahang is one of the oldest tropical rainforest where the surrounding areas are facing critical threats due to tourism activities and infrastructure development. Solar radiation (I), air temperature (Ta), relative humidity (h), wind speed (v) and rainfall were measured at six different locations under the forest canopy, built-up area, trail, campsite, fragmented forest and village area. All the microclimate variables show significant differences at the measured locations. These results further the understanding of the responses to forest fragmentation in the tropical forests created by human activities, and provide a useful basis for evaluating the implications of forest management practices.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125235345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504416
Noriham Abdullah, Zainal Samicho, W. Kamarudin, K. Zulkifli, N. Aziman
Winter melon is a perishable fruit, hence, the need to process it into puree is a necessity. The concept of thermal processing involves in canning process as the most widely used method of preserving and extending the shelf life and capable to inactivate pectinmethylesterase enzyme (PME) in fruit puree was studied. The purposes of this study are to determine the optimum temperature and time for thermal processing of winter melon puree (WMP) and to verify the optimum condition proposed by response surface methodology (RSM). Winter melon puree samples was treated at thirteen different treatment combinations of temperature (°C) and time (second). Each treatment of WMP was analysed for the percentage (%) reduction of PME, total phenolic content (TPC), percent pulp content and physicochemical analysis such as colour (absorbance), total soluble solid (°Brix) and pH. PME and TPC were the responses used in this research. For each treatment % reduction of PME ranged from 27.61–78.05 % while TPC ranged from 12.21–28.84 mg GAE/g fresh weight. The % of pulp content for each treatment of WMP varies from 51.17–63.17 %. However, there were no significance difference results in the colour, total soluble solid and pH of WMP samples. The MINITAB software version 15 used for optimization suggested three possible optimum conditions but the best desirability where the experiment was feasible at temperature 84.5 °C and time 94.1 seconds. At this optimum treatment, the predicted value of % reduction of PME was 78.87 % and TPC 20.34 mg GAE/g fresh weight. After verification at the optimum treatment, results showed that % reduction of PME was 78.12 % and TPC was 20.43 mg GAE/g fresh weight and since the difference values between predicted and verification for both responses (PME and TPC) are less than 5% meaning that the optimum condition predicted by RSM of MINITAB software version 15 can be accepted at the 5% level of significant difference. At this condition pH of WMP was 4.76, colour absorbance 0.4124 nm, % pulp content 55.0 % and total soluble solid 1.282° Brix. All derived mathematical model for the response was found fit significantly to predict the data. This study showed that RSM does not only reduce the number of experiment to be carried out but also effective tool in determining the optimum condition of thermal treatment for WMP.
{"title":"Optimization of thermal processing condition for winter melon puree using response surface methodology","authors":"Noriham Abdullah, Zainal Samicho, W. Kamarudin, K. Zulkifli, N. Aziman","doi":"10.1109/CHUSER.2012.6504416","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504416","url":null,"abstract":"Winter melon is a perishable fruit, hence, the need to process it into puree is a necessity. The concept of thermal processing involves in canning process as the most widely used method of preserving and extending the shelf life and capable to inactivate pectinmethylesterase enzyme (PME) in fruit puree was studied. The purposes of this study are to determine the optimum temperature and time for thermal processing of winter melon puree (WMP) and to verify the optimum condition proposed by response surface methodology (RSM). Winter melon puree samples was treated at thirteen different treatment combinations of temperature (°C) and time (second). Each treatment of WMP was analysed for the percentage (%) reduction of PME, total phenolic content (TPC), percent pulp content and physicochemical analysis such as colour (absorbance), total soluble solid (°Brix) and pH. PME and TPC were the responses used in this research. For each treatment % reduction of PME ranged from 27.61–78.05 % while TPC ranged from 12.21–28.84 mg GAE/g fresh weight. The % of pulp content for each treatment of WMP varies from 51.17–63.17 %. However, there were no significance difference results in the colour, total soluble solid and pH of WMP samples. The MINITAB software version 15 used for optimization suggested three possible optimum conditions but the best desirability where the experiment was feasible at temperature 84.5 °C and time 94.1 seconds. At this optimum treatment, the predicted value of % reduction of PME was 78.87 % and TPC 20.34 mg GAE/g fresh weight. After verification at the optimum treatment, results showed that % reduction of PME was 78.12 % and TPC was 20.43 mg GAE/g fresh weight and since the difference values between predicted and verification for both responses (PME and TPC) are less than 5% meaning that the optimum condition predicted by RSM of MINITAB software version 15 can be accepted at the 5% level of significant difference. At this condition pH of WMP was 4.76, colour absorbance 0.4124 nm, % pulp content 55.0 % and total soluble solid 1.282° Brix. All derived mathematical model for the response was found fit significantly to predict the data. This study showed that RSM does not only reduce the number of experiment to be carried out but also effective tool in determining the optimum condition of thermal treatment for WMP.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132770360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504355
M. Khairiyah, M. Izzati, P. Faezah
A study on the species richness and temporal variation of insect under order Odonata was conducted at National Botanical Garden Shah Alam (NBGSA), Selangor. Samplings were conducted for three months from January 2012 to March 2012 using sweep net. Two trails were chosen at two different lakes and two different sessions which were morning session and evening session. Trail one was located at the innermost part of the forest that far human activities while trail two was located at middle of the forest with open area and near to human activities. A total of 420 odonates were successfully collected consist of four families and 23 morphospecies. The families identified were Lestidae, Libellulidae, Coenagrionidae and Gomhidae. The most abundant family was the Libellulidae with 341 individuals followed by Lestidae, Coenagrionidae and Gomphidae with 54, 16, and 9 individuals respectively. Trail one recorded the highest number of individuals collected with 250 individuals while trail two with 170 individuals had the lowest number of individual collected. Morning session was identified as the most active time for Odonata with 236 individuals collected rather than evening session with only 184 individuals. From the data analysis, Shannon-Weiner Diversity Index showed that there was no significant different (p > 0.05) between both trails and sessions. Overall study had shown area with high vegetation and located far away from human activities had the highest diversity of Odonata.
{"title":"Species richness and temporal variation in the dragonfly and damselfly fauna at National Botanical Garden Shah Alam","authors":"M. Khairiyah, M. Izzati, P. Faezah","doi":"10.1109/CHUSER.2012.6504355","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504355","url":null,"abstract":"A study on the species richness and temporal variation of insect under order Odonata was conducted at National Botanical Garden Shah Alam (NBGSA), Selangor. Samplings were conducted for three months from January 2012 to March 2012 using sweep net. Two trails were chosen at two different lakes and two different sessions which were morning session and evening session. Trail one was located at the innermost part of the forest that far human activities while trail two was located at middle of the forest with open area and near to human activities. A total of 420 odonates were successfully collected consist of four families and 23 morphospecies. The families identified were Lestidae, Libellulidae, Coenagrionidae and Gomhidae. The most abundant family was the Libellulidae with 341 individuals followed by Lestidae, Coenagrionidae and Gomphidae with 54, 16, and 9 individuals respectively. Trail one recorded the highest number of individuals collected with 250 individuals while trail two with 170 individuals had the lowest number of individual collected. Morning session was identified as the most active time for Odonata with 236 individuals collected rather than evening session with only 184 individuals. From the data analysis, Shannon-Weiner Diversity Index showed that there was no significant different (p > 0.05) between both trails and sessions. Overall study had shown area with high vegetation and located far away from human activities had the highest diversity of Odonata.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133755791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504374
H. M. Affandi, F. Hassan, Z. Ismail, M. F. M. Kamal
This study aimed to identify the soft skill implementation problems in Construction Management Program based on lecturers and students perception. A total of 95 construction management students and 44 construction management lecturers participated in this study. Data were collected using a questionnaire. Among the variable studies were the understanding of terms and definition, soft skills and general attitudes. Result of the study shows that there is a mismatch between students and lecturers perception in soft skills implementation. Future study need to be carried out confirm this mismatch in identifying the gap of soft skills in construction management program based on industry, lectures and students perspective.
{"title":"Soft skills implementation in construction management program: A comparative study of lecturers and students perspective","authors":"H. M. Affandi, F. Hassan, Z. Ismail, M. F. M. Kamal","doi":"10.1109/CHUSER.2012.6504374","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504374","url":null,"abstract":"This study aimed to identify the soft skill implementation problems in Construction Management Program based on lecturers and students perception. A total of 95 construction management students and 44 construction management lecturers participated in this study. Data were collected using a questionnaire. Among the variable studies were the understanding of terms and definition, soft skills and general attitudes. Result of the study shows that there is a mismatch between students and lecturers perception in soft skills implementation. Future study need to be carried out confirm this mismatch in identifying the gap of soft skills in construction management program based on industry, lectures and students perspective.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115578786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/CHUSER.2012.6504343
W. Lee
Coastal development in Malaysia poses immense pressure on the water quality and aquatic ecosystem along our coastline. The ubiquitous phenomenon of chaotic mixing reveals the insufficiency of conventional simplified averaging model for pollutant dispersion. This paper considers chaotic advection as a relatively young science in environmental fluids. A preliminary investigation of the mixing features along Malaysian coastline is presented, with special emphasis on the occurrences of Lagrangian chaos. It is concluded that the chaotic dynamical approach to the study of environmental fluids is here to stay and local environmental scientist and engineers ought to keep abreast of the state-of-the-art in chaotic modeling and analysis.
{"title":"Occurrences of chaotic mixing: A preliminary investigation of Malaysian coastal water","authors":"W. Lee","doi":"10.1109/CHUSER.2012.6504343","DOIUrl":"https://doi.org/10.1109/CHUSER.2012.6504343","url":null,"abstract":"Coastal development in Malaysia poses immense pressure on the water quality and aquatic ecosystem along our coastline. The ubiquitous phenomenon of chaotic mixing reveals the insufficiency of conventional simplified averaging model for pollutant dispersion. This paper considers chaotic advection as a relatively young science in environmental fluids. A preliminary investigation of the mixing features along Malaysian coastline is presented, with special emphasis on the occurrences of Lagrangian chaos. It is concluded that the chaotic dynamical approach to the study of environmental fluids is here to stay and local environmental scientist and engineers ought to keep abreast of the state-of-the-art in chaotic modeling and analysis.","PeriodicalId":444674,"journal":{"name":"2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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